Improved reversible die-box for witt-machines



W. ANDERSON.

} REVERSIBLE DIE BOX FOR-NUT MACHINES. No. 96,763.

Patented Nov. 16, 1869.

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tinned sum WESLEY ANDERSON, OF PITTSBURG, PENNSYLVANIA.

Letters Patent N 96,7 63,!1ated November 16, 1869.

IMPROVED REVERSIBLE DIE-BOX FOR NUT-MACHINES.

The Schedule referred to in these Letter! Patent and making pm of the lame- To all whom it may concern:

Be it known that I, Wuscnv Asnnnsos, of the city of Pittsburg, in the county of Allegheny, and State of I Pennsylvania, have invented a new and useful Iniprovement in Reversible Boxes for Nut-lvlachines; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawing, making a part ofthis specification, in which- Figure 1 is a perspective view of my improved reversible die-box, showing its mode of adjustment in a uni-chine. V w

Figure 2 is a perspective view of the lower half of a. four-sided die-box, and showing by dotted lines the position of the other half.

Figure 3is a like view of the lower half of a reversible die-box, illustrative of the construction of a box, octagonal inform, and with a cavity in each face .for

' the manufacture of nuts.

Figure 4 is a perspective view of the back die of a nut-machine.

Like letters of reference indicate like figure.

The dies or die-boxes heretofore used in the manufacture of hot-pressed nuts, have consisted of long metal blocks, with a single cavity extending through them, in which to operate the rear die and punch.

The edges. of such die-boxes are found to wear away very rapidly, because of the severe and continuous use to which they are put; also, on account of the great pressure which is brought to bear upon the nut when being made, the die-boxes have to be fast-. cued very securely to the machine,-so that, (when the faces of the cavit-yor matrix have become worn, and it is necessary to change the die-b0xes,) it is an operation of some ditliculty, and involving a loss of time, to n'nfasten and take 0d the old one, and put a new one in its place.

The object of my invention is to secure an easilyadjusted reversible block, containing several nut-cavities, fastened in such manner as to allow of its being parts in each put into or removed from position, or reversed at pleasure, with ease and rapidity; and

The nature of it consists in the manufacture of a block, of square, octagonal, or other regular form, through the centre of which, from side to side, cavities arecnt, which form matrices or die-boxes, in which the nut is made; and also in a scrcw working against the block, for holding it firmly in position, and for convenience in fastening amLunfitstening it. I

To enable others skilled in the art to make and use my im'ention, I will proceed to describe its construction and manner of use.

Do any suitable bed-platc,-a, I. adjust the square box b.

Running horizontally through it, and crossing each I other at right angles inthe centre, are two cavities, c c, which, coming through the faces of four sides of the block b, form four nut-matrices.

Fastening to, and standing at right angles with the bed-plate a, and at snflicient distance apart to allow the block bto lie between them, are two uprights or standards, (I ll These uprights or standards support a cross-piece, e, and are high enough to allow the block b to be put under it.

Through thecross-piece e, and against the top of the block b, worksa set-screw, f, for the purpose of holding the box in posit-ion when in use. It is thus shown in fig. 1.

As all the pressure upon the die-box is in one direction, and asit is necessary to adjust the die-box because of the different thickness of the iron bars, 850., I place, back of the block b, an adjustable bearingplate, 1, adjustable by means of slots, 1) p, and'setscrews, or. n.

The back die 9 is hollow, as at 8, either for the purpose of allowing a punch to work through it against the nut-blank, or to afford a passage-way, through which the punchings may be expelled.

When the back die is'stationary, water may be supplied through one of the side apertures of the block I), and through the hole '5, which is so placed as to come opposite one of the cross-cavities c, for the purpose of cooling the die and punch.

The box I) is divided into two equal parts by a plane passing horizontally through its centre, and they are held in their relative positions by dowel-pins extend-.

ing from one half into corresponding-shaped holes in the other, and are held firmly together, when in use, by the pressure of the set-screwf.

When the machine is in operation, the bar of iron, from which the nut is to be made, is inserted between the forward die and the matrix 0, adjacent. thereto.

By the act-ion of the forward, die a nut-blank is out oif from the bar, and forced into the matrix 0, and against the face of the back die y, when it is compressed and punched.

W'heneyer the matrix or nut-cavity, 0, becomes so worn as to be unfit for use, I take out the back die 9, loosen the blOCklb, (by means of the screw,) turn it round until one of the other nut-cavities comes into position opposite the front die, and secure it again.

.Thus I am able easily and quickly to, remove and replace or reverse the die-box at pleasure.

I do not wish to limit myself to the particular-sha e of block shown, but claim a hexagonal, octagonal, or any other desired shape su'table tor the purpose.

'The apertures in the bloc b canbe made of various sizes, so as to give several ditfercntsizes of nutcavities in the same block.

When the nut-cavities get too much Worn to make perfect nuts of the size intended, the block may be taken out, and the cavities may be enlarrzed by planing, for making another size.

The cavities in the block b are made by planing, out one side of each of the two pieces of the block b to the depth and shape required to form one half of. the cavity, (see fig. 3,) so that when the two halves are put together, the e'wity is complete, as shown by dotted lines in fig. 2.

The block may also be cast of malleable iron, or any suitable material. 

